JPH0554466U - roller - Google Patents

Abstract

(57) [Summary] [Structure] The shaft member 3 is fixed through the shaft center of the columnar member 2 formed of an elastic material such as rubber or synthetic resin, and a plurality of recesses 4 are formed on the inner peripheral surface of the columnar member 2. Roller provided with. [Effect] Vibration does not occur even when an external shock is applied,
It produces almost no impact noise, and does not generate resonance noise or affect other parts of the device.
Further, the roller 1 can be made lightweight and can be reduced in cost, and can be used for various automation devices.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention mainly relates to a roller used for office equipment such as a printer, a facsimile, a typewriter, a word processor, and a telex, and other automation equipment.

[0002]

[Prior Art]

 In recent years, automation has rapidly progressed in many fields, and new automation equipment such as office equipment for office automation illustrated above has been developed and is becoming widespread. Many rollers are used as important members that perform the functions such as printing.

FIG. 5 is a cross-sectional view showing an example of a conventional roller, and the cross section shown in the center is a cross section perpendicular to the cross sections shown on both sides. In FIG. 5, 11 is a roller, 12 is a cylindrical member, 13 is a shaft member, and the roller 11 is a metal rod at the axial center of the cylindrical member 12 formed of an elastic material such as rubber or synthetic resin. The formed shaft member 13 is fixed by penetrating it.

In this structure, when the cylindrical member 12 of the rotating roller 11 receives an impact from the outside due to the action of paper feeding, printing, etc., the roller 11 vibrates and produces an impact sound, and There is a problem that the vibration of 11 is transmitted to other parts of the device via the shaft member 12 to generate a resonance sound or have an adverse effect. Further, the roller 11 having this structure has a problem that it is relatively heavy and needs to be lightened, and that the cost reduction of the roller 11 greatly contributes to the cost reduction of the device, so that there is a problem that it is desired to be further inexpensive. ..

[0005]

[Problems to be solved by the device]

 The present invention was developed to solve the above problems, and is to provide a roller that has a large sound deadening effect, does not adversely affect other parts of the device, and is lightweight and inexpensive. is there.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has a roller configured as follows. That is, the shaft member is fixed through the shaft center of the columnar member formed of an elastic material such as rubber or synthetic resin, and a plurality of recesses are provided on the inner peripheral surface of the columnar member. In this case, the recess may be a groove parallel to the axis of the columnar member or a spirally formed groove, and the recess may be filled with a granular or powdery object.

Further, the shaft member may be a metal rod, a metal tube, a metal tube that is plastically processed at both ends thereof to reduce the diameter to form a bearing section, or a paper tube. Further, when the shaft member is a metal tube, a plastic tube is plastically processed on both ends of the metal tube to reduce the diameter to form a bearing, or a paper tube, a granular or powdery object is formed inside the shaft member. You should pack it.

[0008]

[Action]

 Since the roller of the present invention is constructed as described above, it operates as follows. First, the recessed portion provided on the inner peripheral surface of the columnar member absorbs an impact received from the outside by the columnar member and the vibration of the columnar member caused by an impact, so that almost no impact noise is generated. In addition, it does not generate a resonance sound or have a bad influence on other parts of the device. When the recess is a groove parallel to the axis of the columnar member or a spiral groove, it is easy to manufacture the cylindrical member provided with the recess, and it is also easy to manufacture a mold for this purpose. When a granular or powdery object such as iron powder is packed in the recess, it absorbs shocks and vibrations better, and the effect of silencing is further enhanced.

If the shaft member is made of a metal rod, it becomes a strong roller, and if it is made of a metal tube, it becomes a strong and light roller. Further, when the paper tube is formed, the weight of the roller is reduced, and the paper tube absorbs the shock and vibration transmitted from the cylindrical member and prevents the paper tube from being transmitted to other parts of the device. If the shaft member is plastically processed on both ends of the metal pipe to reduce the diameter to form a bearing, the space of the metal pipe where the diameter is not reduced is large, and the roller becomes lighter, The columnar member formed of elastic material such as rubber and synthetic resin becomes thin, resulting in cost reduction. In addition, it is an extremely easy work to reduce the diameter by plastically working a metal tube.

When the shaft member is a metal pipe, the both ends of the metal pipe are subjected to plastic working to reduce the diameter to form a bearing portion, or when the shaft member is a paper pipe, granular or powder such as iron powder is contained inside them. If you stuff objects in the shape of a circle, they will absorb shocks and vibrations, further increasing the effects of noise reduction. There are two places inside the concave part of the cylindrical member and the inside of the shaft member where the granular or powdery substance such as iron powder is packed. Depending on the place where the roller is used, etc., both or one of them can be packed. Or both may not be packed. In addition to iron powder, there are various types of granular or powdery substances such as bone powder, iron chloride, and barium sulfate.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1, FIG. 2, FIG. 3 and FIG. 4 are cross-sectional views showing an embodiment of the present invention. The cross-section shown in the center of each figure is a cross-section perpendicular to the cross-section shown on both sides. is there. 1 to 4, 1 is a roller, 2 is a cylindrical member, 3 is a shaft member, 4 is a groove which is a recess provided on the inner peripheral surface of the cylindrical member 2, and the roller 1 is rubber, synthetic resin or the like. The shaft member 3 is fixed through the shaft center of the columnar member 2 formed of the elastic material, and a plurality of recessed grooves 4 are formed on the inner peripheral surface of the columnar member 2. Incidentally, 5 is a side plate made of the same material as the columnar member 2, and 6 is a plug made mainly of rubber.

In the embodiment shown in FIG. 1, the recess formed in the columnar member 2 is a groove 4 having four threads, and the shaft member 3 is formed of a stainless steel rod. In the embodiment shown in FIG. 2, the concave portion formed in the columnar member 2 is an eight-groove groove 4, the shaft member 3 is formed of a stainless steel pipe, and plugs 6 are filled at both ends thereof. In the embodiment shown in FIG. 3, the concave portion formed in the columnar member 2 is the groove 4 having eight threads, and the shaft member 3 is formed by subjecting both end portions 3a of a relatively large diameter stainless steel pipe to plastic working to reduce the diameter. Bearings, and plugs 6 are packed at both ends thereof.

The embodiment shown in FIG. 4 is one in which the iron powder 7 is filled inside the groove 4 and the shaft member 3 of the cylindrical member 2 of the embodiment shown in FIG. It should be noted that the groove 4 in the embodiment shown in FIG. 1 and / or both or one of the groove 4 and the inside of the shaft member 3 in the embodiment shown in FIG. 3 are filled with a granular or powdery object such as iron powder. Alternatively, the iron powder 7 inside the groove or the shaft member 3 in the embodiment shown in FIG. 4 may be removed.

Next, the operation of the embodiment shown in FIGS. 1 to 4 will be described. First, since the groove 4 which is a concave portion provided on the inner peripheral surface of the columnar member 2 absorbs the impact that the columnar member 2 receives from the outside and the vibration of the columnar member 2 caused by the impact, almost no impact noise is generated. Does not occur. In addition, it does not generate resonance noise or have a bad influence on other parts of the device. If the recess 4 is formed as a groove 4 parallel to the axis of the columnar member 2 or a spiral groove as shown in the embodiment, the columnar member 2 provided with the recess 4 can be easily manufactured, and a die for this can be manufactured. Easy to make.

When the shaft member 3 is formed of a metal rod as in the embodiment of FIG. 1, a strong roller 1 is formed, and when the shaft member 3 is formed of a metal tube as in the embodiment of FIG. 2, a strong and light roller 1 is formed. Become. When the paper tube is formed instead of the metal tube, the roller 1 becomes lighter in weight, and the paper tube absorbs the shock and vibration transmitted from the cylindrical member 2 and prevents the paper tube from being transmitted to other parts of the device. .. When the shaft member 3 is formed by subjecting both ends 3a of a relatively large-diameter metal pipe to plastic working to reduce the diameter to form a bearing portion as in the embodiment of FIG. The space is large, the roller 1 becomes lighter in weight, and the columnar member 2 formed of an elastic member such as rubber or synthetic resin becomes thin, resulting in cost reduction. In addition, it is extremely easy to reduce the diameter of a metal pipe by plastic working.

When the shaft member 3 is a metal tube as in the embodiment of FIGS. 2 and 4, both ends 3a of the metal tube are subjected to plastic working to reduce the diameter as in the embodiment of FIG. If a granular or powdery object such as iron powder is packed inside the part or the paper tube, the effect such as sound deadening is further enhanced because it absorbs shock and vibration. In addition, there are two places inside the concave portion 4 of the columnar member 2 and the shaft member 3 at the place where the granular or powdery substance such as iron powder is packed. It may be packed in one or not in both. In addition to iron powder, there are various types of granular or powdery objects such as bone powder, iron chloride, and barium sulfate.

[0017]

[Effect of the device]

 As described above, the roller of the present invention does not generate vibration even if the roller receives an impact from the outside, hardly emits an impact sound, transmits a resonance sound to other parts of the device, or has a bad influence. Will not be affected. Further, it is possible to reduce the weight of the roller and reduce the cost. Due to this excellent roller, it can be widely used in office equipment such as printers, facsimiles, typewriters, word processors, telex, and other automation equipment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a roller of the present invention, in which the cross section shown in the center of the drawing is a cross section perpendicular to the cross sections shown on both sides.

FIG. 2 is a cross-sectional view showing an embodiment of the roller of the present invention, in which the cross section shown in the center of the drawing is a cross section perpendicular to the cross sections shown on both sides.

FIG. 3 is a cross-sectional view showing an embodiment of the roller of the present invention, in which the cross section shown in the center of the drawing is a cross section perpendicular to the cross sections shown on both sides.

FIG. 4 is a cross-sectional view showing an embodiment of the roller of the present invention, in which the cross section shown in the center of the drawing is a cross section perpendicular to the cross sections shown on both sides.

FIG. 5 is a sectional view showing an example of a conventional roller.

[Explanation of symbols]

 1 Roller 2 Column Member 3 Shaft Member 3a Both Ends 4 Recess (Groove) 7 Iron Powder

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65H 5/06 A 7111-3F

Claims (9)

[Scope of utility model registration request] 1. A shaft member is pierced and fixed to a shaft center of a columnar member formed of an elastic material such as rubber or synthetic resin, and a plurality of recesses are provided on an inner peripheral surface of the columnar member. roller. 2. The roller according to claim 1, wherein the recess is a groove parallel to the axis of the cylindrical member. 3. The roller according to claim 1, wherein the concave portion is a spiral groove. 4. The roller according to claim 1, wherein the concave portion is filled with a granular or powdery substance. 5. The roller according to claim 1, wherein the shaft member is formed of a metal rod. 6. The roller according to claim 1, wherein the shaft member is formed of a metal tube. 7. The roller according to claim 1, wherein the shaft member is formed by subjecting both ends of a metal pipe to plastic working to reduce the diameter to form a bearing portion. 8. The roller according to claim 1, wherein the shaft member is formed of a paper tube. 9. The roller according to claim 6, wherein the shaft member is filled with a granular or powdery substance.